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groundwater resources

groundwater resources - GEOL 108 Groundwater Resources...

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GEOL 108: Groundwater Resources 18:13 Clicker Q’s: Some clay minerals expand in the presence of water creating unstable land  surfaces. -TRUE Pedocal soils are enriched in AL and Fe -FALSE Clay minerals form by the process of… -hydolysis Irrigation leads to… -salts  A poorly developed soil horizon will occur on which type of bedrock… -Shale and siltstone, mica schist, quartzite, serpentinite (all the above) Water on Earth: most is saltwater -freshwater: mostly out of the ground hydrologic cycle: precipitation (rain or melting ice from glaciers), run off,  infiltrates, evaporates and continuing groundwater table: look at slide—in water-soaked rocks called aquatard, rocks  have natural—permeability how well the space connected -Darcy’s Law: predicts how fast water will flow (really slow) this explains why  springs still have water even in a drought year
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